Khan's problem isn't his chin or his recooperation
The problem is he cant get out of the way of punches. He cant slip or duck a punch and he tries to throw 5 punch combinations as if he is Roy Jones. When he throws his head stays in the same place and is an easy target. Even when hes not throwing hes an easy target, but when he throws his chin and head are on a platter begging for his opponent to hit him clean.
He could learn alot from Tim Bradley about avoiding punches, but he doesnt have the ability to do what Tim does in there. He definately needs major work on getting out of the way of punches. Unless your Margarito, Myorga, or the raging bull, your not gonna last long taking the clean shots to the grill that Amir takes.